var loading = function(isLoading) {
	var loading = $('#NP_loading');
	if (loading.length == 0) {
		loading = $('<div id="NP_loading" style="position: fixed;top: 0;left: 0;right: 0;bottom: 0;z-index: 20170107;text-align: center;"><img style="height: 26px;width: 26px;position: absolute;top: 50%;margin-top: -13px;left: 50%;margin-left: -13px;" src="/carworld_weixin/images/NP_loading.gif"/></div>');
		$('body').append(loading)
	}
	if (isLoading) {
		loading.show()
	} else {
		loading.hide()
	}
}
loading(true);